:root{--accent:#7a3e68;--accent2:#c77b6f;--ink:#28243c;--paper:#f8f4f7;--white:#fff;--muted:#637083;--line:color-mix(in srgb,var(--ink) 16%,transparent);--shadow:0 20px 55px rgba(15,30,55,.11)}*{box-sizing:border-box}html{font-size:16px;scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:"Noto Sans JP","Yu Gothic",system-ui,sans-serif;line-height:1.75}a{color:inherit}.skip{position:fixed;top:-80px;left:1rem;background:#fff;padding:.75rem 1rem;z-index:20}.skip:focus{top:1rem}.site-head{height:74px;display:flex;align-items:center;justify-content:space-between;padding:0 clamp(1rem,4vw,4rem);background:color-mix(in srgb,var(--paper) 88%,white);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10;backdrop-filter:blur(12px)}.brand{display:flex;align-items:center;gap:.75rem;text-decoration:none;font-weight:800;letter-spacing:.03em}.mark{width:38px;height:38px;display:grid;place-items:center;background:var(--ink);color:#fff;border:2px solid var(--accent2);font-family:serif}.site-head nav{display:flex;gap:1.3rem}.site-head nav a{text-decoration:none;font-size:.9rem;font-weight:700;padding:.4rem 0;border-bottom:2px solid transparent}.site-head nav a[aria-current=page]{color:var(--accent);border-color:var(--accent)}.nav-button{display:none;background:transparent;border:1px solid var(--line);padding:.55rem .8rem;color:var(--ink)}main{min-height:72vh}.hero{max-width:1240px;margin:auto;min-height:620px;padding:clamp(3.5rem,8vw,8rem) clamp(1.2rem,5vw,4rem);display:grid;grid-template-columns:1.1fr .8fr;gap:clamp(2rem,7vw,7rem);align-items:center}.hero h1{font-size:clamp(2.7rem,6vw,5.5rem);line-height:1.08;letter-spacing:-.045em;margin:.35rem 0 1.5rem;max-width:12ch}.eyebrow{font-size:.76rem;letter-spacing:.2em;font-weight:900;color:var(--accent);margin:0 0 .6rem}.lead{font-size:clamp(1.05rem,2vw,1.28rem);max-width:43rem;color:#425069}.hero-actions{display:flex;gap:.8rem;flex-wrap:wrap;margin-top:2rem}.button{display:inline-flex;align-items:center;justify-content:center;padding:.85rem 1.2rem;text-decoration:none;font-weight:800;border:1px solid var(--ink);min-height:48px}.button.primary{background:var(--ink);color:#fff}.button.secondary{background:transparent}.decision-board{background:var(--white);box-shadow:var(--shadow);padding:1.6rem;border-top:6px solid var(--accent)}.decision-board>p{font-weight:900;margin-top:0}.decision-board div{display:grid;grid-template-columns:3.2rem 1fr;gap:1rem;padding:1rem 0;border-top:1px solid var(--line);align-items:center}.decision-board b{color:var(--accent);font-size:1.3rem}.section,.page-head,.steps,.offer-grid,.check-panel,.prose,.callout{max-width:1120px;margin:auto}.section{padding:5rem 1.2rem}.intro{display:grid;grid-template-columns:.8fr 1.2fr;gap:4rem;border-top:1px solid var(--line)}h2{line-height:1.3;letter-spacing:-.025em}.intro h2,.section-head h2{font-size:clamp(2rem,4vw,3.2rem);margin:.2rem 0}.intro>p{font-size:1.08rem}.category-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:1px;background:var(--line);border:1px solid var(--line);margin-top:2rem}.category-card{background:var(--white);padding:1.5rem;min-height:280px;display:flex;flex-direction:column}.category-card>span{font-weight:900;color:var(--accent)}.category-card h3{font-size:1.25rem}.category-card h3 a{text-decoration:none}.category-card p{color:var(--muted);font-size:.94rem}.text-link{margin-top:auto;font-weight:800;color:var(--accent);text-underline-offset:4px}.pathway{display:grid;grid-template-columns:.7fr 1.3fr;gap:4rem;background:var(--ink);color:#fff;max-width:none;padding-left:max(1.2rem,calc((100vw - 1120px)/2));padding-right:max(1.2rem,calc((100vw - 1120px)/2))}.pathway ol{list-style:none;margin:0;padding:0}.pathway li{display:grid;grid-template-columns:7rem 1fr;gap:1rem;border-top:1px solid rgba(255,255,255,.2);padding:1.1rem 0}.pathway li b{color:var(--accent2)}.ad-note{border-bottom:1px solid var(--line)}.page-head{padding:clamp(3.5rem,8vw,7rem) 1.2rem 3rem}.page-head h1{font-size:clamp(2.5rem,6vw,5rem);line-height:1.08;max-width:16ch;margin:.4rem 0 1.2rem}.page-head>p:last-child{max-width:48rem;font-size:1.1rem;color:#4b5870}.steps{padding:0 1.2rem 5rem}.steps article{display:grid;grid-template-columns:6rem .9fr 1.2fr;gap:2rem;padding:2rem 0;border-top:1px solid var(--line);align-items:start}.steps article>span{color:var(--accent);font-size:1.8rem;font-weight:900}.steps h2{margin:0}.steps p{margin:0;color:var(--muted)}.callout{background:var(--white);border-left:6px solid var(--accent);padding:2rem;margin-bottom:5rem}.split{display:grid;grid-template-columns:1fr 1fr;gap:4rem}.mini-check{background:var(--white);padding:2rem}.planned-list{background:var(--white);border:1px solid var(--line)}.planned-list div{display:grid;grid-template-columns:4rem 1fr auto;gap:1rem;padding:1rem 1.2rem;border-top:1px solid var(--line)}.planned-list div:first-child{border-top:0}.planned-list span{color:var(--accent);font-weight:900}.planned-list em{font-style:normal;color:var(--muted);font-size:.85rem}.notice{max-width:1120px;margin:0 auto 2rem;padding:1.4rem;background:color-mix(in srgb,var(--accent2) 12%,white);border:1px solid color-mix(in srgb,var(--accent2) 40%,transparent)}.notice p{margin:.3rem 0 0}.offer-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;padding:1rem 1.2rem 3rem}.offer{background:var(--white);padding:1.5rem;border:1px solid var(--line);display:flex;flex-direction:column}.offer>span{font-size:.75rem;font-weight:900;color:var(--accent)}.offer p b{display:block;font-size:.78rem;color:var(--muted)}.offer ul{padding-left:1.2rem;color:var(--muted);font-size:.9rem}.offer button{margin-top:auto;padding:.8rem;border:0;background:#e8ebef;color:#737b85;font-weight:800}.comparison div{display:flex;gap:.6rem;flex-wrap:wrap}.comparison div span{background:#fff;border:1px solid var(--line);padding:.55rem .8rem}.check-panel{padding:0 1.2rem 5rem;max-width:820px}.progress{display:flex;justify-content:space-between;padding:1rem 0;border-bottom:3px solid var(--ink)}.check-panel label{display:flex;gap:1rem;padding:1.25rem 0;border-bottom:1px solid var(--line);cursor:pointer}.check-panel input{width:1.35rem;height:1.35rem;accent-color:var(--accent)}.check-panel label span{display:flex;flex-direction:column}.check-panel small{color:var(--muted)}.reset{margin-top:1rem;background:transparent;border:1px solid var(--line);padding:.7rem 1rem}.memo-grid{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--line)}.memo-grid div{min-height:110px;padding:1rem;background:#fff;border:1px solid var(--line)}.prose{padding:0 1.2rem 6rem;max-width:780px}.prose p{font-size:1.08rem}.updated{font-size:.9rem!important;color:var(--muted);margin-top:3rem}footer{padding:3rem clamp(1rem,5vw,4rem);border-top:1px solid var(--line);display:grid;grid-template-columns:1fr 1fr;gap:2rem}footer nav{display:flex;gap:1rem;flex-wrap:wrap;justify-content:flex-end}footer nav a{font-size:.88rem}.copyright{grid-column:1/-1;font-size:.8rem;color:var(--muted)}body.academic .hero h1,body.editorial .hero h1{font-family:"Yu Mincho","Hiragino Mincho ProN",serif;font-weight:700}body.ledger .decision-board{border-radius:0;transform:rotate(-.5deg)}body.blueprint .decision-board{background-image:linear-gradient(rgba(36,99,235,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(36,99,235,.05) 1px,transparent 1px);background-size:24px 24px}@media(max-width:900px){.site-head nav{display:none;position:absolute;top:74px;left:0;right:0;background:var(--white);padding:1rem;flex-direction:column;border-bottom:1px solid var(--line)}.site-head nav.open{display:flex}.nav-button{display:block}.hero,.intro,.pathway,.split{grid-template-columns:1fr}.hero{min-height:auto}.category-grid{grid-template-columns:repeat(2,1fr)}.offer-grid{grid-template-columns:repeat(2,1fr)}.steps article{grid-template-columns:3rem 1fr}.steps article p{grid-column:2}.memo-grid{grid-template-columns:repeat(2,1fr)}footer{grid-template-columns:1fr}footer nav{justify-content:flex-start}}@media(max-width:580px){.category-grid,.offer-grid,.memo-grid{grid-template-columns:1fr}.hero h1,.page-head h1{font-size:2.5rem}.hero{padding-top:4rem}.section{padding:3.5rem 1rem}.planned-list div{grid-template-columns:2.5rem 1fr}.planned-list em{grid-column:2}.pathway li{grid-template-columns:5.5rem 1fr}}
.article-preview>.button{margin-top:2rem}.article-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem;margin:2rem 0}.article-card{display:flex;flex-direction:column;background:var(--white);border:1px solid var(--line);padding:1.5rem;min-height:250px}.article-card h2{font-size:1.25rem;margin:.65rem 0}.article-card h2 a{text-decoration:none;text-underline-offset:4px}.article-card h2 a:hover{text-decoration:underline}.article-card p{color:var(--muted);margin:.3rem 0 1.25rem}.article-number{font-size:.76rem;color:var(--accent);font-weight:900;letter-spacing:.04em}.article-card .text-link{margin-top:auto}.article-section{border-top:1px solid var(--line)}.article-head .eyebrow a{text-decoration:none}.article-meta{font-size:.86rem!important;color:var(--muted)!important}.article-layout{max-width:1180px;margin:0 auto;padding:0 1.2rem 2rem;display:grid;grid-template-columns:minmax(0,820px) 240px;gap:3rem;align-items:start}.article-content{min-width:0}.quick-answer{background:var(--white);border-left:5px solid var(--accent);padding:1.5rem 1.7rem;margin-bottom:1.5rem}.quick-answer strong{color:var(--accent)}.quick-answer p{margin:.4rem 0 0;font-size:1.08rem}.article-toc{background:color-mix(in srgb,var(--accent) 6%,white);padding:1.4rem 1.6rem;margin:1.5rem 0 3rem;border:1px solid var(--line)}.article-toc ol{padding-left:1.4rem;margin:.5rem 0 0}.article-toc li{padding:.25rem 0}.article-toc a{text-underline-offset:3px}.article-section-body{padding:1rem 0 2.3rem;border-bottom:1px solid var(--line);scroll-margin-top:100px}.article-section-body h2,.article-conclusion h2,.article-checklist h2,.source-box h2{font-size:clamp(1.45rem,3vw,2rem);margin:.4rem 0 1rem}.article-section-body h2 span{font-size:.78rem;color:var(--accent);margin-right:.85rem;vertical-align:middle}.article-section-body p,.article-conclusion p{font-size:1.06rem}.article-section-body ul,.article-checklist ul{padding-left:1.4rem}.article-section-body li,.article-checklist li{padding:.23rem 0}.article-conclusion{padding:2rem 0}.article-checklist{background:var(--white);padding:1.6rem;margin:0 0 2rem}.article-checklist .button{margin-top:.8rem}.source-box{border-top:1px solid var(--line);padding:1.8rem 0;margin:2rem 0}.source-box p{color:var(--muted);font-size:.94rem}.source-box li{padding:.25rem 0}.source-box a{color:var(--accent);text-underline-offset:3px}.article-cta{background:var(--ink);color:#fff;padding:1.7rem;margin:2.3rem 0}.article-cta .eyebrow{color:var(--accent2)}.article-cta h2{font-size:1.65rem;margin:.3rem 0}.article-cta p{color:rgba(255,255,255,.82)}.article-cta .button{border-color:var(--accent2)}.article-side{position:sticky;top:100px;display:grid;gap:.8rem}.article-side>div{background:var(--white);border:1px solid var(--line);padding:1rem}.article-side .eyebrow{font-size:.68rem;margin-bottom:.3rem}.article-side a{font-weight:700;text-underline-offset:3px}.related-section{border-top:1px solid var(--line)}.offer-featured{grid-column:span 2;border-top:6px solid var(--accent);box-shadow:var(--shadow)}.offer-featured .button{margin-top:auto}.offer-featured small{display:block;margin-top:.7rem;color:var(--muted)}.tracking-pixel{position:absolute;width:1px;height:1px;overflow:hidden}.affiliate-disclosure{border-left:5px solid var(--accent)}
@media(max-width:900px){.article-layout{grid-template-columns:1fr;gap:1.5rem}.article-side{position:static;grid-template-columns:repeat(3,1fr)}.article-side>div{min-height:100px}}
@media(max-width:580px){.article-grid{grid-template-columns:1fr}.article-card{min-height:0}.article-side{grid-template-columns:1fr}.article-side>div{min-height:0}.article-layout{padding-left:1rem;padding-right:1rem}.quick-answer{padding:1.2rem}.article-toc{padding:1.2rem}.article-cta{padding:1.25rem}}
@media(max-width:580px){.offer-featured{grid-column:span 1}}